GM Authority is diving into the numbers to find out if the GMC Sierra HD Duramax is better for towing and payload than the ...
The L5P isn't like the LML or the LBZ. GM locked it down harder than any previous Duramax — military-grade ECM encryption, ...
One of the most common questions Chevy Silverado HD buyers ask is whether the optional Duramax engine is worth the premium. Now, we're diving into the specs.
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